Justification:Alasmidonta mccordi was listed in 1996 (Baillie and Groombridge 1996) as Critically Endangered due to insufficient survey information. In 2000, surveys confirmed that A. mccordi is Extinct (Bogan 2000) and there has been no further evidence in recent years to suggest otherwise (Bogan et al. 2008).

This species was known only from a single specimen collected from the Coosa River in St. Clair County, Alabama, prior to its impoundment (Athearn 1964, Mirarchi et al. 2004). It is currently believed to be extinct (Bogan et al. 2008).

This species has been given a NatureServe Global Heritage Status Rank of GX - presumed extinct (NatureServe 2009), and was assigned an American Fisheries Society Status of Possibly Extinct (1 Jan 1993), and a previous IUCN Red List Category of EX (2000 ver 2.3).